Something that is satisfactory is acceptable to you or fulfils a particular need or purpose.
反义词
unsatisfactory , inadequate
双语例句
例： I never got a satisfactory answer.
我从未得到过令人满意的回答。
例： The concept of instinct is not a satisfactory explanation of human behaviour.
本能这种概念不是对人类行为的一种令人满意的解释。
例： It seemed a very satisfactory arrangement.
这好像是一种非常令人满意的安排。